Integrate BACKBEAT SDK and resolve KACHING license validation

Major integrations and fixes:
- Added BACKBEAT SDK integration for P2P operation timing
- Implemented beat-aware status tracking for distributed operations
- Added Docker secrets support for secure license management
- Resolved KACHING license validation via HTTPS/TLS
- Updated docker-compose configuration for clean stack deployment
- Disabled rollback policies to prevent deployment failures
- Added license credential storage (CHORUS-DEV-MULTI-001)

Technical improvements:
- BACKBEAT P2P operation tracking with phase management
- Enhanced configuration system with file-based secrets
- Improved error handling for license validation
- Clean separation of KACHING and CHORUS deployment stacks

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

pkg/dht/encrypted_storage.go

@@ -10,10 +10,10 @@ import (
 	"sync"
 	"time"
 
-	"chorus.services/bzzz/pkg/config"
-	"chorus.services/bzzz/pkg/crypto"
-	"chorus.services/bzzz/pkg/storage"
-	"chorus.services/bzzz/pkg/ucxl"
+	"chorus/pkg/config"
+	"chorus/pkg/crypto"
+	"chorus/pkg/storage"
+	"chorus/pkg/ucxl"
 	"github.com/libp2p/go-libp2p/core/host"
 	"github.com/libp2p/go-libp2p/core/peer"
 )
@@ -404,7 +404,7 @@ type StorageEntry struct {
 func (eds *EncryptedDHTStorage) generateDHTKey(ucxlAddress string) string {
 	// Use SHA256 hash of the UCXL address as DHT key
 	hash := sha256.Sum256([]byte(ucxlAddress))
-	return "/bzzz/ucxl/" + base64.URLEncoding.EncodeToString(hash[:])
+	return "/CHORUS/ucxl/" + base64.URLEncoding.EncodeToString(hash[:])
 }
 
 // getDecryptableRoles determines which roles can decrypt content from a creator
@@ -610,7 +610,7 @@ func (eds *EncryptedDHTStorage) AnnounceContent(ucxlAddress string) error {
 	}
 	
 	// Announce via DHT
-	dhtKey := "/bzzz/announcements/" + eds.generateDHTKey(ucxlAddress)
+	dhtKey := "/CHORUS/announcements/" + eds.generateDHTKey(ucxlAddress)
 	err = eds.dht.PutValue(eds.ctx, dhtKey, announcementData)
 	
 	// Audit the announce operation
@@ -627,7 +627,7 @@ func (eds *EncryptedDHTStorage) AnnounceContent(ucxlAddress string) error {
 
 // DiscoverContentPeers discovers peers that have specific UCXL content
 func (eds *EncryptedDHTStorage) DiscoverContentPeers(ucxlAddress string) ([]peer.ID, error) {
-	dhtKey := "/bzzz/announcements/" + eds.generateDHTKey(ucxlAddress)
+	dhtKey := "/CHORUS/announcements/" + eds.generateDHTKey(ucxlAddress)
 	
 	// This is a simplified implementation
 	// In a real system, you'd query multiple announcement keys